Code 128 Barcode Generator Online
This Code 128 barcode generator runs in your browser with no installation. Use it for inventory codes, SKUs, and product labels. Generate barcodes with numbers and letters, then download them as PNG images for labels and packaging.
This free barcode generator online is ideal for generating a barcode for product labels, sample tags, and small batches. A Code 128 barcode maker that works with numbers and text, with no signup required.
Current content overview
Contains numbers, letters, symbols. For the cleanest barcodes, keep the code short and avoid unnecessary special characters.
Save the image from your browser or place this URL in design tools that support external images.
Always print a small test sheet and scan with your actual devices before using the barcode in production.
How to Generate a Code 128 Barcode
- Enter your text or number in the input field.
- Click Generate barcode to create the image.
- Download the image or right-click to save it as PNG.
You can adjust bar thickness and height to match your label size. This barcode generator with numbers and letters is ideal for quick tests and small batches.
What Is Code 128 Barcode?
Code 128 is a high-density linear barcode used in inventory, logistics, and shipping. It supports alphanumeric characters, so you can encode product codes, SKUs, and tracking numbers in a compact format. Most scanners and label printers support it.
Barcode Generator for Inventory and SKU Labels
Generate barcodes for product tracking, internal inventory management, and warehouse workflows. Use this free barcode label generator for shelf labels, bin codes, packing slips, and retail in-store tags. For generating product IDs in sequence, try our Serial Number Generator.
Label boxes, shelves, or internal products so your team can scan items in and out with handheld scanners.
Use barcodes on small sample tubes, envelopes, or paperwork where space is limited but scanning is useful.
Add a barcode to invoices, tickets, or worksheets to link paperwork to your digital systems.
Code 128 vs QR Code
Code 128 is a linear (1D) barcode: horizontal bars encode short alphanumeric codes. QR codes are 2D and can store URLs, Wi‑Fi details, and more text. Use Code 128 for inventory, SKUs, and product IDs. Use QR codes when you need links or larger data. If you need 2D scannable codes, try our QR Code Generator.
Printing Tips for Code 128 Barcodes
Use a minimum size so scanners can read the bars clearly. Keep a quiet zone (blank space) on both sides of the barcode. Print black bars on a white background for good contrast, and avoid stretching or distorting the image. Test prints before large runs.
Common Barcode Generation Mistakes
Avoid printing barcodes too small or with low contrast. Cropping the quiet zones makes scanning unreliable. Choose Code 128 for alphanumeric codes; for URLs or long text, a QR code is better. When integrating with inventory systems or APIs, ensure JSON payloads are valid using our JSON Formatter.
Barcode Generator FAQ
- What does this barcode generator do?
- This tool creates simple Code 128 barcodes from the text or numbers you enter. You can use it for product SKUs, inventory labels, internal codes, sample labels, and basic tests.
- Which barcode format does this tool support?
- The current version focuses on Code 128, a very common, flexible linear barcode format. It supports numbers, letters, and many symbols, which makes it useful for general inventory and internal codes.
- Is this barcode generator free to use?
- Yes. The barcode generator on ToolDeskHub is free in your browser. You do not need an account or subscription, and you can generate as many barcodes as you need for small and medium projects.
- Can I download the barcode as an image?
- Yes. After generating the barcode, you can download it as a PNG image. You can then place it on labels, PDFs, documents, or packaging designs before printing.
- Are barcodes generated in my browser?
- Yes. The barcode image is rendered in your browser from the content you enter. This makes the tool quick to use for simple tasks. For large-scale or automated barcode generation, you may still want a dedicated system or library.
- Is Code 128 the same as EAN or UPC barcodes?
- No. Code 128 is a general-purpose linear barcode that can encode many characters. EAN and UPC are specific retail barcode standards used in stores and point-of-sale systems. For checkout-ready barcodes, you usually need numbers assigned by a standards body such as GS1.
- Can I use these barcodes for retail products?
- For internal use (warehouses, sample labels, small shops), Code 128 barcodes are often enough. For large retailers and supermarkets, you typically need official EAN or UPC codes registered to your brand. Always confirm requirements with your retailer before printing packaging in bulk.
- How big should a printed barcode be?
- Barcodes should be large enough to scan easily, with clear black lines on a light background. Avoid extremely small sizes. Printing a test sheet first and scanning with your actual devices is the safest way to confirm that the size works.
- Can I generate multiple barcodes at once?
- This tool is designed for one barcode at a time. You can still paste different SKUs and generate them one by one for small batches. For large bulk lists, consider a spreadsheet and a scripting solution or a dedicated barcode platform.
- Does the tool store my barcode content?
- No. The data you enter is only used to draw the barcode in your browser. ToolDeskHub does not store your content or send it to a database.
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